Touch Pro External Power

"The phones themselves regulate the input at 5v. The lithium ion batteries need to be protected from overcharging and complete discharge otherwise they are susceptible to explosion.
The emergency charge cell phone battery dongles out now, are powered by AA and 9v batteries, but the input charge is still regulated at 5v"

That's the part I needed -- thanks!!! I knew there was a 9v dongle, but I couldn't find anything to say whether the phone would handle the additional voltage! If the input charge is regulated, then I could conceivably put a full 12.5 v (off a car) and still be ok (I won't ask it handle that much over, as I don't know how much wattage the overvoltage circuit can handle, but the principle is there!).

Many thanks!

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